Nutrient stoichiometry is important

Nutrient stoichiometry is important for many primary producers, and some aquatic plants have constrained nutrient ratios; yet the relative proportions of N and P did not fully explain floating plant abundances in the experiment.Mechanistically, these plants may be less limited by proportions of nutrients in the water column due to luxury consumption, the uptake and storage of excess nutrients for future use.Indeed, several studies have found tissue C:N:P ratios of macrophytes to differ among locations based on nutrient availability. For duckweeds in particular, found that the N:P ratios in growth media significantly affected growth (measured as frond counts) in lab assays with L. gibba, but they used high N concentrations to ensure it was not limiting (127.0 mg L 1 TN), such that only P or N:P could control growth.